An issue was discovered in Backdrop CMS 1.13.x before 1.13.5 and 1.14.x before 1.14.2.
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
An issue was discovered in Backdrop CMS 1.13.x before 1.13.5 and 1.14.x before 1.14.2. It doesn't sufficiently filter output when displaying certain block descriptions created by administrators. An attacker could potentially craft a specialized description, then have an administrator execute scripting when configuring a layout, aka XSS. This issue is mitigated by the fact that the attacker would be required to have the permission to create custom blocks, which is typically an administrative task.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:backdropcms:backdrop_cms:*:*:*:*:*:*:*:* | 1.13.0 to before 1.13.5; 1.14.0 to before 1.14.2 | Vulnerable | backdropcms |
- cpe:2.3:a:backdropcms:backdrop_cms:*:*:*:*:*:*:*:* Versions 1.13.0 to before 1.13.5; 1.14.0 to before 1.14.2 Vulnerable ·backdropcms
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-19901
- 2026-10-03 Alias added: GHSA-86wq-h57h-6m7w
References
More backdropcms Backdrop Cms vulnerabilities
- TI-2025-39465 Host Header Injection vulnerability in Backdrop CMS 1.32.1 allows attackers to manipulate… CVSS 3.1MEDIUM 6.1
- TI-2023-14781 A stored Cross-site scripting (XSS) issue in Text Editors and Formats in Backdrop CMS… CVSS 3.1MEDIUM 4.8
- TI-2022-20386 Backdrop CMS version 1.23.0 was discovered to contain a stored cross-site scripting (XSS)… CVSS 3.1MEDIUM 4.8
- TI-2022-20385 Backdrop CMS version 1.23.0 was discovered to contain a stored cross-site scripting (XSS)… CVSS 3.1MEDIUM 4.8
- TI-2025-18731 Cross-site scripting in backdropcms backdrop CVSS 3.1MEDIUM 4.4
- TI-2019-10981 Backdrop CMS 1.12.x before 1.12.8 and 1.13.x before 1.13.3 allows the upload of… CVSS 3.0CRITICAL 9.8
Sources
- CVE-2019-19901 · CVE Program
- CVE-2019-19901 · NVD
- FIRST EPSS
- GHSA-86wq-h57h-6m7w · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences